- We have been studying the technologizing of skill of the medical doctor in the medical diagnosis such as dialysis related amyloid arthropathy (DRAA) by ultrasonographic images. Proper position, orientation, and contact force between the ultrasound probe and the affected part of the patient are required to acquire the proper diagnostic image. In this paper, we propose a navigation system to support the medical doctor to realize proper position of the ultrasound probe by utilizing the constructed shoulder model based on the knowledge of the medical doctor and the analysis of the diagnosis.